Question

Sound waves cannot travel in
A) Vacuum
B) Water
C) Glass
D) Hydrogen gas

Answer 1

vacuum, because sound require a medium to move.

Answer 2

Sound waves cannot travel in
A) Vacuum
B) Water
C) Glass
D) Hydrogen gas

Answer :

For their propogation sound waves require material medium to pass through it . But in a vacuum there is no medium . And that is why sound can't travel through the vacuum.
The sound waves can't travel through the vacuum.

Option A) is the required Answer.